[Bug 1170827] Re: No way to create a PV from a LUKS volume in installer

[Roel Brook]

I have devised a workaround for this, and will share this here:

- Boot the system with a gparted CD
- Partition your disk, in my case:
    - Partition 1: 250 MB
    - Partition 2: 20 GB
- Now, luksFormat /dev/sda2 (replace with your partition):
    - cryptsetup luksFormat /dev/sda2
- Open the luks volume:
    - cryptsetup luksOpen /dev/sda2 pvCrypt
- Partition LVM:
    - pvcreate /dev/mapper/pvCrypt
    - vgcreate vgSystem /dev/mapper/pvCrypt
    - lvcreate -nlvRoot -L10G vgSystem
    - lvcreate -nlvSwap -L1G vgSystem
- Reboot with the install CD / DVD loaded
- *Before* starting setup, unlock and open the crypt. Open a terminal.
    - cryptsetup luksOpen /dev/sda2 pvCrypt
    - pvscan
    - vgchange -ay
- Install ubuntu. Enter the LVs and their respective mountpaths. /dev/sda1 will be /boot
- On first boot, the boot fails. Enter the same commands as above, followed by ctrl-D.
- In a shell:
    - echo -e "#<Target>\t<Source>\t<Key file>\t<Options>\npvCrypt\t\t/dev/sda2\tnone\tluks" >> /etc/crypttab
    - update-initramfs -u
- Reboot

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https://bugs.launchpad.net/bugs/1170827

Title:
  No way to create a PV from a LUKS volume in installer

Status in “ubiquity” package in Ubuntu:
  New

Bug description:
  - Slightly related to https://bugs.launchpad.net/ubuntu/+source
  /debian-installer/+bug/923552, but actually different -

  In the 13.04 installer, during custom partitioning, you can create a
  partition, then set "Use as" to "Physical Volume for Encryption".

  This creates a LUKS volume, with a ext4 filesystem inside.

  It should be possible (and was, in older versions), to use the LUKS
  volume as a LVM Physical Volume. You can select the ext4 partition and
  select "Change". However, you cannot select physical volume.

  Selecting "Physical Volume for Encryption" again, crashes the
  installer.

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